Heat-insulated receptacle



Dec. 8, 1925.

G. c. ANTHON HEAT INSULATED RECEPTACLE Filed Aug.

. 1919 2 Sheets-Sheet 1 Dec. 8,1925.

G. C. ANTHON HEAT INSULATED RECEPTAOLE 2 Sheets-Sheet 2 Filed Aug. 11,1919 ATTORNEY.

- To all whom it may concern i manual). 8,1925.

UNITED STATES GEORGE C. AUTHOR, 01 NEW YORK, N. Y.,

PATENT OFFICE.

ASSIGNOR '10 STANLEY INSULATING COH- muw, or came naanme'ron,-mssacnusnrrs, A CORPORATION or name.

' m'r-msuna'ran nacnr'mcm. I

Application med August 11, 1919. Serial No. 316,829.

Be it known that I, Gnonou C. ANTHoN, a citizen of the United States,residing at New York, in the county of New York and State of New York,have invented certain new and useful Improvements in Heat-InsulatedReceptacles, of which the following is'a specification.

This invention relates to thermally insulated receptacles of the typegenerally known as vacuum bottles and particularly to those in which thespaced shells of the receptacle are made of metal, such as steel, joinedtogether at the neck of the bottle as by means of welding. This joinderof the inner and outer shells provides in effect a thermal .bridgebetween the two shells across which a transfer of heat may take place,and which therefore detracts to a certain extent from the efliciency .ofthe device.

One of the objects of my invention is to reduce so far as possible,these losses through the neck or connecting bridge between the twoshells; and further toaccomplish this result without impairing thephysical structure of the vessel or interferlng with the securing of theparts together by means of welded joints.

Another object of the invention, is to so construct the parts that theinner and outer shell may be held fixed in spaced relation wholly bymeans of the connection between the neck portions of the two .shells.

Accordingly, one feature of the invention consists in the provision ofaconnecting neck-piece between the innerand outer shells of a materialwhich is of greater thermal 1'esisti"ity than the material of theshells;-

In. the case of steel shells I find a. specialv alloy of nickel andcopper particularly suited for this thermal bridge, and this alloybetween the parts, which joints,

also is of such a nature that it can be readily welded to the metal ofthe shells.

Another feature of ,the invention is the provision of over-lappingtelescopic joints of their over-lapping relation, brace the connectedparts so that the inner shell ma besupported wholly by means ofthe necportion between-the-two-shells. Other features ofi the-invention willappear as .thespecification roceeds In the accompanying rawin I haveillustrated 'in Figures 1 and 2 ongitudinal sectional -views ofpractical and preferred embodiments of my invention, but would have itunderstood that thestr'ucturcmay be modified in various respects withoutdearture from. the s irit and scope of the invention as defined in theappended claims.

In these drawings, and'in. Figure 1 ticularly, 1' designates the outershell and 2 the inner shell, said shells being usually constructed ofsteel and separated by. an intervening heat-insulating space 3exhau'sted to the roper degree and-containing usually a filling ofgas-absorptive material.

4 designates the thermal insulating neckpiece connecting the outer andinner shells,

par-

said neck-piece beingflshown herein as a slightly tapered sleeve fittedtelescopically at its upper end in the flanged neckiece 5 of the outershell and similar] to esco ically' engaged at its inner en with t eflanged neck portion 60f the inner shell.

The: high thermal resistivity orthermal insulating character of thisbridging element between the outer and inner shells is obtained bymaking said element of a metal which is oflow thermal conductivity. Atthe present time I use an alloy for this purpose of substantially fiftyper cent nickel and fifty per cent copper. This alloy answers thepurpose of a metallic ther-, mal insulator between the outer and innershells and also is of such a character that it can be welded to thesteel shells. These welded connections .are made at the relatively wideover-lappingjoints at 5 and 6 between the outer and 'inner shells andthe opposite end ortions of theneck-piece. In'

addition to, acilitating the formation of good welded joints, theover-lapping 'telescopic connections described serve to brace theconnected inner and outer shells. And while the overlapped jointsprovide an increased surface contact between the shells and the neck'-.

uction at these joints is more than overcome by the intervening splan ofhi 'her I thermal resistivit between t e two shlls.

[The inner shel is shown made in two parts, the lowerbody part(indicated at 2) and an upper part 7 o substantially frustoconicalshape. This upper section 7 is also shown connected by means of atelescopic over-lapping joint with the lower body section as indicatedat 8, thus carrying forward the bracing efi'ect already referred to.

The outer shell is shown closed at the lower end by inner'and outerbottom plates 9 and 10 and a false bottom 11, said parts being suitablysecured to the shell as by means of the over-lapped welded jointsillustrated. The inner bottom plate 9 is shown formed with a cuppeddepression 12 in the centre thereof perforated as shown at 13 for theescape of gases during the. exhausting process To prevent exhaustion ofthe filling material as well a filter 14 of material such as mineralwool may be placed in this pocket. The second bottom plate 10 is shownprovided with a central depression or cup 15 providing a chamber aboutthe perforated cup of the first bottom into which opens the exhaustingtube 16 which, upon the completion of the exhausting process, issealedoff in any suitable manner.

In the second form of the invention illustrated (Figure 2) the outershell is formed with an annular shoulder 17 in the neck portion thereofand with an annular enlargement 18 below said shoulder providing a seatin which the outer end of the neck-piece l is-engaged. Preferably theparts are so proportioned that the inner wall of the neck-piece will bein line with and form a continuation of the inner surface of the neckportion of the outer shell, as indicated. This allows for a smooth flowof the liquid, and the relatively wide overlapping joint at 18 providesa secure connection between the parts and one which, is readily welded.

The mouth of the outer shell may be finished off with a bead orrolled-over portion 19 which may stand out far enough to substantiallycover the enlarged and shouldered portion of the neck of the outershell.

These metallic. receptacles are usually provided with a non-corrosivelining of suitable material, such as enamel. This enamel adheres readilyto the steel shells, but in some cases less readily to the neckpiecewhich, as above described, is usually constructed of an alloy of higherthermal resistivity than steel. The construction illustrated in Figure 2is particularly advantageous in this connection, in that the enamelcoating, which extends continuously from the inner shell through theneck-piece to the mouth of the outer shell, is in this case firmlyanchored at the opposite ends of the neck-piece, at the points indicatedat 20 and 21 to the steel inner and outer shells, The lining is thuspermanently secured at the opposite ends of what may be the weakestportion thereof and at the point where the wear comes, that is, at themouth of the receptacle, the enamel is continued with the steel of theouter shell and with which it forms a permanent and durable Iconnection.

I claim 1. A heat insulated receptacle comprising an outer shell havinga shouldered neck portion with an annular enlargement below saidshoulder forming an annular seat, an.

inner shell and a connection between said inner and outer shells havingits outer end seated in said annular enlargement beneath tliefihoulderin the neck portion of the outer s 1e an outer shell having ahead at themouth thereof, a shoulder in the neck portion below said head and anannular enlargement beneath said shoulder, an inner shell and aneck-piece connecting the inner and outer annular enlargement beneathsaid shoulder,

aninner shell and a neck-piece connected at its inner end with the innershell and seated at its outer end in the annular enlargement aforesaidand with its inner surface substantially flush with the inner surface ofthe neck portion of the outer shell.

ture.

GEORGE o. aurnouj 2. A heat insulated receptacle comprising In testimonywhereof I affix my signa-i .shells and seated in the annular enlarge- I

